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An Introduction to Transformer Inspection

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As we all know, a transformer is an electrical device with two or more coils of wire. The coils of wire are used to transfer electrical energy from a charging magnetic field.

Transformers are mainly used for increasing (‘step up’) or decreasing (‘step down’) voltage levels between circuits. If there are a greater number of turns on the primary coil then the voltage will decrease or step down. On the other hand, if the number of turns is lesser on the primary coil than on the secondary coil, then the voltage will increase or step up.

Why is Transformer Inspection Important?

One of the primary reasons for transformer inspection is to ensure that the internal and external components of a transformer are in good shape and can be used without any hitches.

It is also to give peace of mind during their operations that the transformers are safe. Another comparatively important reason is to maintain a record of the condition of the transformers.

Inspection of the transformers can be done periodically or on a condition based. By conducting the required inspection of the Transformers, you not only ensure the protection of this asset but also get the guarantee of the transformers’ reliability. This will help you avoid the costs that will come about with failed transformers and also helps you avoid impacting your business productivity.

What do you get through this Inspection?

The transformers may appear to be in good shape. But just because they appear to be in good shape does not necessarily mean that they operate well too.

Through predictive inspection, which is carried out through additional testing and monitoring, you will be able to identify the current trends of the Transformers and their behavior.

Through the results of this inspection, you will be able to in time, implement the necessary actions and plans required to guarantee the proper functioning of the transformers.

This type of predictive inspection includes chemical physical analysis tests of the dielectric oil. The analysis will help determine the percentage of water in the transformer as well as the chemical concentration of the oil.

Preventive inspection is implemented on the transformers which have not yet failed but are usually performed on the basis of scheduled maintenance and regular testing. This type of inspection is also carried out on the basis of the results of the preventive inspection as well as visual analysis and electrical tests.

But, when your transformers have already failed, then this is the time when corrective maintenance comes to play. At this point in time, the main focus is to intervene in the transformer and lower the production impact to the best of the ability. In the end, though, it is still recommended for you get your transformers inspected according to the suggested timings so as to avoid ever coming down to corrective maintenance.

Remember, the transformers play a vital role for your company as, without them, the operations in your company are not possible. So, it is in the best possible interests to come up with an inspection routine for your transformers. This will help you to be aware of any possible problems or glitches coming up or that are left unresolved. It will also help you closely monitor the maintenance procedures.

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